Paper-bag-making machine.



P. L. BARTHOLOMEW.

PAPER BAG MAKING MACHINE. APPLICATION FILED MAY 22. I918.

1,283,454. Patented Nov. 5, 1918.

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P. L. BARTHOLOMEW.

PAPER BAG MAKING MACHINE. APPLICATION FILED MAY 22. ms.

1 ,28 3,4541. Patented Nov. 5, 1918.

9 SHEETS-SHEET Z. 5 z:

224 J/ JZ 3/ P. L. BART HOLOMEW.

PAPER BAG MAKING MACHINE. APPLICATION FILED MAY 22. l9l8- 1,283,454.. Patented Nov. 5, 1918. I 0 /7 /39 7SHEETS-SHEET 3- 9 1129 /51 w Ufiw P. L. BARTHOLOMEW. PAPER BAG MAKING MACHINE. APPLICATION FILED MAY 22. 1918. 1,283,454. Patented Nov. 5,1918.

9 SHEETS-SHEET 4- IIHII llll llllk P. L. BARTHOLOMEW.

9 SHEETS-SHEET s. /74Z I73 I56 A66 /50 A57 942 A52 53 /7/ A93 Patented Nov. 5, 1918.

P. L. BARTHOLOMEW. PAPER BAG MAKING MACHINE.

APPLICATION FILED MAY 22. 1918. 1,283,454. Patented Nov. 5, 1918.

9 SHEETS-SHEET 6- P.L. BARTHOLOMEW.

PAPER BAG MAKING MACHINE. APPLICATION FILED MAY 22. 1919.

Patented Nov. 5, 1918.

9 SHEETS-SHEET 7- P. L. BARTHOLOMEW. PAPER BAG MAKING MACHINE. APPLICATION FILED MAY 22, 1918.

9 SHEETS-SHEET 8.

Patented N 0v. 5, 1918.

P. L. BARTHOLOMEW.

PAPER BAG MAKING MACHINE.

APPLICATION FILED MAY 22, 1318; 1,283,454. lutvntvd Nov. 5, 1918.

Wessas:

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. PHINEAS I1. BARTHOLOMEW, OF AURORA, ILLINOIS. I

PAPER-BAG-MAKING MACHINE.

This-invention relates to paper bag mak ing machines, and more particularly to those machines of the rotary type and in which a diamond fold is formed for the bottom of,

each bag, the body of the latter being formed of a bellows folded tube; I

Among the objects of my invention is to improve the construction of machlnes of the kind referred to in the several particulars as will hereinafter more fully appear, and to provide in particular improvements in that portion of the machine which makes and forms a diamond fold for the bottom of the bag. Another object of my invention, is to so construct and arrange the/parts of the machine that the latter may be operated at a very high rate of speed and thus enable the formation and turning out'of completed bags at a very rapid rate. A further object -"of my invention is to provide means for accurately and positively guiding the paper tube to the gripper rolls andalso to hold the tube against lateral and other displacement as the tube is fed to the gripper rolls, so that the 'gripper mechanism of the latter may be able to properly grip the portions ofthe paper tube at the desired places and thus permit the making; of perfect bags. From this it follows that the formation of imperfect bags is eflectively guarded against and thus waste avoided. This is an essential advantage in machines of this character, because, inasmuch as they are operated at a very high rate of speed and'produce and turn out completed bags at a very rapid rate, itfollows that the operator is unable to detect an imperfect bag at the time that it is initially formed. The bags being formed at such a rapid rate, the operator cannot detect the formation of imperfect bags until a great number of them havebeen completed and the first one delivered from the machine. At such time the operator stops the-machine in order to adjust the paper tube being fed thereinto, and is required Specification of Letters Patent. 7 Application filed May 22; 1918. Serial No. 235,952.

, per tube,

Patented Nov. 5, 1918.

to waste that portion of the material in the machine which has been converted into imperfect bags. With a machine constructed [in accordancewith my invention 1 am enabled to guard against such Waste and thereby enhance the efiective output of the machine. A further object of my invention is to so construct the gripper mechanism of the grlpper rolls that they act positively and with firmness and open and close at the required time to grip and release the interposed portions of the paper tube. A still further object of my invention is to so construct the gripper mechanism that certain parts thereof are moved toward and from each other. for the purpose of gripping and releasing the interposed portions of thepathat, in case the machine should be operated wlthout any stockbeing fed thereinto, such portions of the gripper mechanism will not pound'or contact against each other and thereby avoid the crystallization and ultimate breaking of such parts. A still further object of my lnvention is to place one of the sets of cutting knives in the feed rolls positioned beyond the gripper rolls so as to permit the entrance of wires into annular grooves in the gripper rolls, and thereby prevent the paper tube from being carried around with such gripper rolls incase the paper tube should become attached to such gripper roll'by an adhesive or other substance that may become adhered to such gripper roll. A still further object of my invention is to provide a set of cutting knives in one of the gripper rolls so that the layer of the paper tube provided with the lip or tongue may be completely severed from the'tube and thus permit such tongue. to be raised into position for engagement by the grippers provided for that part. Another object ofmy invention is to so construct and mount the spreader arms and ironer plates that all of such parts may be swung bodily outward away from the gripper rolls by a manual operation in order to permit the operator to gain access to the portions of the gripper rolls immediately behind such parts,'-- as would be required in feeding the paper tube initially into the machine, or in casethe tube should become buckled or otherwise folded during'the opand to provide such a construction guide and stripping ticularlyj pointed out. in the appended cla1ms.

taken on line 12--12 of Fig. 11;

In the. accompanying drawings- Figure 1 is an elevational view ofv one side of a paper bag making machine constructed in accordance with my invention;

Fig. 2is a top plain view of said ma hine' Fig. 3 is a front elevational view aid machine;

. Fig. 4 illustrates the train of gearing at the side of the machine'opposit'e that side shown in Fig. 1;

Fig. 5 is a transverse vertical sectional view taken on line 5-5 of Fig. 2;

Fig. 6 is an enlarged longitudinal vertical sectional view taken on line 6-6 of Fig. 2;

Fig. 6 is an enlarged detailed view of the spreader member to be hereinafter referred to;

Fig. 7 is an enlarged fragmentary trans verse vertical sectional view taken on line Fig. 8 is a fra mentary transverse vertical sectional view ta en on line 8--8 of Fig. 1;

Fig. 9 is an enlarged transverse vertical sectional view taken on'line 9-9 of Fig. 6;

Fig. 10 is a fragmentary longitudinal vertical sectional view taken on the indirect line 10-10 of Fig. 3 and showing the cams for acfiiating the gripper fingers 1n the gripper ro s;

Fig. 11 is a bottom plan view of the forming plate and attached tongue;

1g. 12 is a longitudinal sectional view Fig. 13 is an enlarged top plan view of i the parts taken on line 13-13 of Fig. 6;

Fig. 14 is a perspective view of the several rolls of my machine shown in the positions which they occupy when placed in the machine frame, the latter being omitted for the sake of clearness of illustration; said figure also illustrates the manner in which the paper tube is received at the gripper .rolls and its several portions grippe by the ripper fingers for forming the diamond old for the bottom of the bag; I

Fig. 14 is an enlarged view through one side edge of the folded paper tube between the feed and gripper ro ls and being taken .on line l i -14 of Fig. 14;

Fig. 15 is an enlar ed front elevational view of the gripper rol s of my machine,'th'e remaining parts of the latter being omitted on line 1616 of Fig. 15;

for the sake of clearness of illustration;

Fig. 16 is a vertical sectional v1ew taken Fig. 17 is a vertical sectional view taken on line 17l7 of Fig. 15;

18'is a lon 'line 19-19 of Fig. 17;

Fi 20 is a like sectional view taken on" line 50-2Q of Fi 16;

F1 21 1s an en arged fragmentary elevationa view, with parts insection, of the gripper fin ers int 0 up er ri er roll as shown in F lg. 19, and wh ich gri i per fingers serve to erigagethe lip provided on the paper tube iii-the process of forming the diamond fold for the bottom of the'bag; and

Fig. 22 is an enlarged elevational new of one of the gripper fingers and its associated parts, as shown in Fig. 18. \g

In the drawings, I have illustrated in d'e tail a paper bag makin machine constructed in accordance wit my invention, and, as shown, the same comprises a supporting frame embracing two longitudinally extending side members 10, 10, laterally s'paced algtrt' and maintained in such spaced relation y suitable cross-bars or the like, which may be found most desirable for this purpose. When reference is made herein to thefront and rear ends of the machine, the rear end is intended to mean the receiving end of the machine, that is, the end at which the bellows folded tube is fed thereinto, and the front end is intended to mean the de livery end of themachine. Secured to and projecting upward from each side member 10 adjacent the rear end of the machine is an upright standard 11, 11, between which extends a cross-bar 12. (See Figs. 1 and 2). Mounted on the latter are two blocks 13,

'13, each being provided with an elongated 12, the block having depending flanges. at

the sides of the groove to prevent the block from being moved transversely of the crossbar, as clearly shown in Fig. 8. Secured to the upper face of each block 13 is a sub-v stantially flat depth plate 16 projecting toward the opposite block and which lates extend'into the bellows fold atthe si es of the paper tube being'operated upon by my machine. By having said blocks 13, 13 adjustable in the manner described, it follows that said depth plates'16, 16 may be adjusted toward and from each other to accommodate them to the depth of the bellows fold in the sides of the paper tube and thus serve to define such depth as the tube is fed to the feed and other rolls of my machine. Associated with said depth plates I 16 is a forminghplate, which in the instance shown com rises two substantially fiat plates 17, 18, maintained vertically spaced apart by an interposed strip or member 19, the latter being of such dimensions as to extend between the plates substantially at or; about the center thereof and to occupy the space between the opposed edges of the depth. .plates 16,16, as clearly. illustrated in Flg. 8.

The paper tube being fed into the machine completely envelops the forming plates'17,

, 18, that is, the upper layer of the tube extends overland above the upper plate 17, while the lower layerof the tube extends under and below the lower plate 18, with the depth plates 16, 16 extending inward into the bellows fold at the sides of the tube and thus serving to define the depth of such folds and aid 1n preventlng the tube from being displaced laterally in its movement through themachine.

Secured to and projecting upward from each frame member .10 at a point forward of the standards 11 is an upright standard 20 having a vertical slot therem to receive two bearing boxes 21, 22, in which are journaled the associated ends of shafts 23, 24, upon which are mounted feed or .drawing rolls '25, 26, which serve to draw therebetween the folded tube from the forming plates 17, 18. Said rolls 25, 26 are superimposed and have rolling contact with each other, as clearly shown in Figs. 1, 6, 7, and

14. The lower roll 26 is fixed in its position in any suitable manner, but preferably by having its bearing box 22 held agalnst vertical movement in the standards 20. The

upper roll 25. is allowed to yield vertically in the standards, and to maintain it properly held against the lower roll, I provide a suit able form of tension device for such purose, one example of which, as shown in Fig. 1, comprises a spring 27 having a set screw 28 for the purpose of varying the tension of said spring as the case requires. For the purpose of imparting rotary movement to said rolls 25, 26, I provide at one end of the shafts intermeshing gears 29, 30

fixed to said shafts, as clearly shownin Fig.

4. Power is transmitted to said feed'rolls by having the gear 30 of the lowermost roll meshing with a gear 31, which in turn meshes with a, gear '32 secured to the main driven shaft 33 of the machine. For the purpose of transmitting power to said shaft 33, I provide at one end thereof two belt pulleys 34, 35, ,one being fixed and the other loose, as customary and as shown in Fig.2.

At the opposite end of said shaft 33 I provide a hand wheel 36, which may be used to manually throw over the machine inthe initial feeding of the paper tube thereto. The main driven shaft 33 extends transyersely across the machine between the side ward of the lip,

along the inner edge members 10, '16 thereof, and is secured to to provide a lip or tongue 38 and also two short side cuts 39, 39 at each side but rearas clearly illustrated in Fig. 14. In said figure, I have also'shown two transverse cuts 40,40 extending from the baseof the liptoward the side cuts 39 but terminating short of the same, sothat there left unsevered between the longitudinal cuts 39 and the transverse cuts 40. Said-transverse cuts 40 extend clear through the tube, that is, through both the upper and lower layers thereof and also through the crease of the bellows fold in each side of the'tube, as shown in Fig. 14. The transverse cuts 40 are formed at the .time that the tube is .fed or drawn through the feed rolls 25, 26, and to accomplish such result I provide in said rolls suitable cutting mechanism for that purpose. In the form of construction shown in the drawings such utting means comprise two relatively short cutting knives 41, 41 set "in the upper feed I roll 25 and arranged so as to extend lengthwise thereof and project radially outward therefrom so as to cut through the tube when passing over the same. Said knives 41 are fixed in such positions and are laterally spaced apart to accomplish the purposedehangers 37 provided for I is a portion ofthe upper layer of the tube sired. The lower roll 26 is provided in its outer surface-with suitable slots or recesses 42 to receive said cutting knives when such parts pass each other during the rotation of said rolls.

Secured to and extendin upward from the side members 10, 10 ad acent the front or forward end'of'the machine, are two upright standards 43, 43, each being provided with avertical slot of guide-way 44 to receive therein bearing boxes 45, 46 of the two gripper rolls 47, 48, which have rolling contact for the purpose of aiding in feeding the paper tube through the machine. Said boxes 45, 46' are maintained spaced apart by an interposed spacing member in the form of a block 49 located in the slot 44, as

shown in Fig. 1.. The upper roll 47 isyieldingly held against the lower roll 48 by a spring 50 bearing downward on the box 45 and provided with a set screw 51 for the purpose of varying the tension of the spring. Said gripper rolls 47, 48 .are provided with I 46. Said or mounted on shafts 52, 53 journaled at their ends in the associated bearing boxes 45, gripper rolls are rotated in the required directions b intermeshing gear wheels 54, 55 minute on the ends of the shafts. 52, 53 at the left-hand side of the l machine, as'shown in Fi 4. Power is 4 of forming t transmitted to said gear w eels 54, 55 by having the latter intermesh 'with the gear wheel. 31, which in turn meshes with the ear Wheel 32 on the main driven shaft 33. aid gripper rolls 47, 48 are provided with j and e'lficie'nt operation of the gripping mechanism in the former rolls, I interpose between such two sets of rolls a suitable form of s reading mechanism, which in the ex-' as follows.

amp. e shown in the drawings is constructed tween the sidemembers 10, 10 is a cross- ;bar 56,-' the' latter being located between the 3 "standards 11 and 20, as shown 1n F1gs. 1

and 2,11 Securedto and extending upward from said crossbar 56 are two upright standards 56, 56,.of a heigli 5 equal to the combined heig t substantially hard, and the block 13, as-shown in' said Fig.;1.- Said standards 56? are referably -.located'in-alinement with the bloc s 13, and

lthere forel; are positioned about centrally of the crossbar 56. Secured to the upper end :of eachstandard 56 is a 40v ide strip 57 extending from said stan' ard toward the 1 front .of the machine and passing between the. feed rolls 25, 26, there being provided annular grooves 58, 59 in the feed rolls for 1 that purpose. By such construction the feed trolls do not contact with the strips, as

' clearly shown in Fig. 7. Said guide strips 57, 57.extend partially into the bellowsfold strip 57 extends or at the sides of the tube, as shown in Fig.

'14, and may or ma not extend beyond the side edges of'the olded tube. One guide rojects into the fold at each side of the tu e, and it follows that gaged by the gripper fingers an said strips serve properly to guide the paper tube from the feed to the grlpper rolls, and aid in preventing the tube from being displaced out of proper alinement with respect to the gripper fingers and cutting knives in said ipper rolls. From this it follows that t e paper tube is fed to the gripper rolls in proper position to be properly entate accurate and eflicient forming of the diamond fold, with the'attendant resultof avoidin fective age and resultant waste of'mateower layers. of the paper tube Secured to and extending be-' t of the stand-1 thus facilithe making of imperfect and demeant "rialr V Said annular grooves 58, 59 form at each side thereof annular bearing surfaces 60, 61, which have rolling contact with each such construction, the depth plates 16 are ulded by such parts in the adjustment of t is depth plates, and further such. parts act as stop members toprevent the depth plates displaced bodily toward the from being standards 56.

Secured to and projecting upward from the side members 10 are two upright standards 62, 62, of a height substantially equal to that of the standards 56. Said standards 62, 62 are located between the feed and gripper rolls, as shown in Fig. 1. Extend- 1n across the machine between the stands ar .s 62, 62 and secured to the upper ends thereof is a cross-bar 63. Said guide strips .57, 57 after passing between the feed rolls are secured to the upper face of said crossbar 63 and extend forward beyond the same to a point short of the gripper rolls 47, 48, as shown in Figs. 1 and 2. Said guide strips are provided with laterally extending portions or'ears 64, 64 for this purpose. Be-

tween each ear 64 and the cross-bar 63 is a spacing block 64 to space the guide strip a ove the cross-bar and permit the'folded portions of the paper tube to pass between such parts as 'is necessary. Secured to the upper surface of said cross-bar 63 is a fiat supporting table or plate 65 extending across the space between the guide strips 57 but below the same for the purpose of supporting the lower layer of the papertube as it is fec from the feed rolls to the gripper rolls. The inner end .of said plate 65 terminates short of the feed rolls 25, 26 and is bent or curved downward, as shown in Figs. 1 and 6, for the purpose of allowing the paper tube to enter and slide freely on the upper surface of the plate. Each uide strip 57 at its forward end is bent sfiightly downward .so as to be below the maining portion of the strip, as shown in Fig. 6. Secured to the upper surface of each strip at its forward end is a short strip 66 bent slightly upward so as to project above the upper surface of the strip proper and thereby provide at the forward end of -each guide strip two vertically separated parts or strips, as shown in Fig. 6. In the plane of the'respace thus provided there operates a mova le separator 67 adapted to be reciprocated back and forth into and out of the opeh end .of'the slot or s ace thus formed, by a rod 68 Sa1d sprea er 67 is secured to the Y presently describe ing bent inward for that purpose. Said rod 68 is secured at its lower end to a rock shaft 69 extending across and journaled at its ends in the side members 10 of the machine frame. Any suitable form of mechanism may be provided for imparting motion to said rock shaft 69, but, as shown in the drawings, I provide forthis purpose a cam 70 mounted on a shaft 71 extending between and having its endsjournaled in the side members of the machine frame. Said rock shaft 69 is provided with a cam arm- 72 projecting forward therefrom and having at its free or outer end a roller or other bearing member 73 adapted to have rolling contact with the peripheral surface of the cam 70. To hold the roller 7 3 against the cam 70, I provide a spring 69' encircling the rock shaft and having one end connected on the adjacent side with a fixed lug 69" member 10 of the machine frame, and the other end connected with said rock shaft, as shown in Fig. 5. As the cam 70 is revolved it is apparent that the shaft 69 is rocked or oscillated for the purpose of reciprocating the Spreaders-67. As illustrated in Figs. 6

and 13, the. spreader 67 is composed of two L-shaped fingers 74, 75 spaced apart vertically at their ends so that when they are projected forward from the space between the spread ends of the guide strips 57 they will serve to separate the upper and lower layers of the tube as it feeds into the gripper rolls 47, 48 and hold such layers in such position so that the gripper fingers in said rolls will be able to readily grip portions of the tube for the urpose which will be d? Whenat rest each spreader 67 lies within the space between the separated ends of theguide strips 57, as

shown in Fig. 6, and therefore does not.

project far enough into the space between the griptper rolls to interfere with the gripper ngers or the cutting knives rovided thereon. When the spreader 6 is projected forward, however, it has a throw suflicient to accomplish the purposes desired. To limit the throw of the spreader in both directions, I have provided a guide plate 76 provided with an outwardly opening slot 77, movement, the ends in which the rod 68 has of the slot serving as stop members for the rod, as shown in Fig. 13. As the paper tube is fed from the feed rolls to the gripper rolls, it naturally follows that the sides of the tube formed by the folding thereof pass over the separated forward ends of the guide strips 57, and, inasmuch as the latter are spaced apart vertically as. described,'

they serve to separate the sides of the tube along the line of fold thereof. The upper gripper roll 47 is provided with two annular grooves 78,78 for the purpose of allow ing th preader 6.7 to be projected lose to upper end of said rod 68, the latter be- Fig. 12.

the contacting point of that roll with the gripper rOlls 47, 48,'and thus enable the' gripper fingers on the upper gripper 47 to grip the lip and aid in openingthe end of the tube for making the diamond fold. To accomplish this, I provide a construction as follows: Extending forward from the center. of the forming plates 17, 18 is an extension 79 passing between the feed rolls 25, 26, there being suitable annular grooves 80, 80 provided in the feed rolls for that purpose, as shown in Figs. 2 and Said extension 79 is preferably made of twosuperimposed strips of metal, an upper strip 81 and a The lower strip 82 terminates short of the forward end of the upper strip 81, but has its forward end bent downward to provide a stop flange 83, as shown in said Fig. 12. Located below the upper strip 81 is a tongue plate 84 having its rear end projecting into the space between the stop flange 83 and the upper strip 81. Said plate 84 is provided at its outer end with a lower strip 82, as shown in.

tongue member 85, preferably given the shape as shown in Figs. 11 and 13. Said tongue plate 84 is pivoted intermediate its ends by transverse pivot pins 86, 86 resting in suitable upwardly opening slots or open ings provided in the side flanges 87, 87 of the upper strip 81. It will be'noted that the pivotal point is nearer the forwardend of the tongue plate than its rear end,-sothat the rear end has a weight greater than the forward end, thereby causing the tongue plate to be acted upon by gravity for thepurpose of holding the tongue member 85 normally raised and in position to always hear upward against the under side of the upper layer of the paper tubepassingthereover. Said tongue member 85 terminates slightlyshort of the contacting portions of the two gripper rolls 47, 48, and is normally urged by the action of gravity toward the upper gripper roll. Said tongue 85 is so positioned that the lip 38 in the tube passes over the same as it feeds into the gripper rolls, and by being pivoted in the manner described has a certain amount of flexibility in order to hold the lip 38 against the upper gripper roll so as to be in position to be readily and quickly grasped by the gripper fingers in such roll and furthermore allow it to yield in case any foreign matter should become interposed between the lip and the gripper roll.

The upper gripper roll 47 is provided with two longitudinally alined fixed cutting said knives project radially beyond the outer surface of the roll and are received in grooves or slots 89, 89 in the lower roll 48 during the rotation of the rolls. Said knives are of such a length and are so positioned that they cut ofi" the tube from the slot 40 (Fig. 14) to the folded side edge thereof. After such operation is effected, the pivoted tongue serves to hold the now free lip 38 against the upper roll 47, and the latter 1s provided with gripper fingers to grip such lip at each side thereof and to carry it upward in the rotation of the roll, the lower layer of the tube being grlpped by gripper fingers in the lower roll 48 for the purpose of opening the severed end of the tube m the forming of the diamond fold. In Fig. 14, I have shown such gripper fingers actlng to accomplish the function stated, and in Figs. 15 to 22 I- have shown the construction of such parts. The gri per fingers for gripping the lip 38 at the sides thereof are located in a suitable chamber or recess 90 opening outward through the cylindrical surface of the upper roll 47 and normally closed by a cover section 91 of the roll 47,

as clearly shown in Fig. 19. Projecting inward from said section 91 at or about the center thereof is a supporting plate or member 92. The two grlpper fingers 93, 93 are connected at their Inner ends with said plate 92 by suitable pivot pins 94, 94. A

spring .95 is interposed between and connects said gripper fingers 93 together and serves to draw them toward each other. Said gripper fingers 93 project outward beyond the outer cylindncal surface vof the roll 47 through suitable apertures or openipgs 96 (Fig. 21) provided in the section '91 for that purpose To spread the fingers apart against the tension of the spring 95, I provide an operating rod or bar 97 rockably mounted at its ends in the cover sec-7' tion 91. Pivotally mounted on said supporting plate 92 between the gripper fingers are two bell crank levers 98, 98, each having one end, bearing against the associated inner side edge of the gripper finger 93 and the other end positioned beneath a lug 99 secured to said bar 97. At one end of the bar 97 is a spring 100- so formed and connected with the parts'that it tends to rock the bar into a position for holding the gripper fingers closed. The other end of the bar 97 projects beyond the end of the roll 47 and has secured thereto an actuating arm 101 having at its free end a suitable roller or member 102 bearing on the outer surface of a fixed cam 103 encircling the shaft 52 at one end of the upper roll 47. The are so arranged and timed that the gripper fingers 93 are opened and. closed at the proper intervals in the rotation of the rolls 47, 48. From the disclosure made it is clear that when the arm 101 is rocked by the cam parts 103, the gripper fingers 93 will be spread apart in the rocking of the rod 97, due to the fact that the levers 98 are at such time moved outward so as to actuate against the inner sides of the gripper fingers 93 for this purpose. In the opening of the gripper fingers the lip 38 of the paper tube is broughtinto position to extend across the space between the gripper fingers 93, and as soon as such action takes efl'ect'the arm 101 has reached a point allowing the spring 100 to rock the rod 97 for the purpose of bringing the gripper fingers into closed position and gripping the sides of the lip 38 tightly against the roll 47. To accomplish thls result, each gripper finger 93 is provided at its outer end with a gripping member 104 105 adapted to reach over the lip 38 at the side thereof. Said gripper member 104 is .secured to the gripper finger 93 by a pivot pin 106 and is provided at its inner end with a lug 107, to which is connected a spring 108, the lower end of the latter being connectedwith a pin 109 provided on the associated gripper, finger 93. The springs 108 serve to normally hold the tongues 105 in open position, but to close them when the gripper fingers are moved toward each other by the spring 100, I provide stop' pins 110 on. the plate 92 and against which the gripper members 104 are in contact so as to rock the latter about their pivot pins 106 and cause the tongues 105 to be drawn downward toward the roll and against the interposed portion of the paper lip 38 therebetween. From the above it follows that when the rod or shaft 97 is rocked in the opposite direction by the cam, the tongues 105 will be raised from gripping engagement with the interposed paper lip 38 by the action of the springs 108 in "the moving away of the gripping members 104 from their stop pins 106 and thereby release the paper lip 38.

thereon by pivot pins116 at the inner ends thereof. Said fingers 115 are drawn toward each other by an interposed spring 117 provided for that purpose. Rockably mounted in said cover section 112 is arod or shaft 118. For'each gripper finger 115- there is a bell crank lever 119, one end of which bears against the inner side edge of the associated gripper finger and the other end of which provided for that purpose. The cham-' v i z The upper roll 47 may also be provided is depressed by a dog 129 fixed on the rod 118, as clearl shown in Figs. 18 and'22. From this itollows that when the rod 118 is rocked, the dogs 120 are moved downward against the bell crank levers 119, and the latter serve to move the gripper fingers 115 away from each other against the tension of the spring 117, the latter serving to hold the gripper fingers in contact with the bell crank levers. Each gripper finger 115 projects outward through the cover section 112 through a suitable opening or slot 121 provided for that purpose, said -slots being elongated so as to permit the swinging movement of the gripper fingers 115. The rod 118 is also provided adjacent'each gripper finger with a gripper dog 122 rigidly secured to the rod and adapted in the rocking thereof to be moved toward and from tween the portion of the paper tube to be gripped by such parts, I provide at the opposite end of said rod an arm 125 having at its free end a roller 126 bearing on a fixed cam 127 encircling the shaft 52 of the upper roll 47. It will be noted from an inspection of Fig. 15 that the cam actuating mechanism for the rod 118 is at that end of the roll 47 opposite to the cam operating mechanism of the rod 97 for the gripper fingers for the paper tongue 38, although any other arrangement of the parts may be made to meet the requirements of the particular machine being made. The gripper fingers 115 and the associated dogs 122 are so positioned in the roll 47 as to grip when closed the upper layer of the paper tube as it is brought around the upper roll 47, as shown in Fig. 14. It will'be noted that said gripper fingers 115 and 122 grip the paper tube over the outer creased edge of the upper layer, and the action thereof is positive. In other words, such gripper parts are moved apart from each other to permit the edges of the tube to be fed into position so that the gripper flange 123 is brought inward against the outermost part of the paper tube, while the gripper dog 122 is moved outward to engage the innermost part of the paper tube,

thereby causing such gripper parts to firmly grip the paper tube between them. action of such parts is very rapid in the operation of the machine, and to prevent breaking of the coacting parts of such grip per mechanism as they are brought toward each other, I'provide means for prevent ing such parts from pounding against each The' other when the machine is run without any paper stock therein. If such means were not provided, it is apparent that the flange 123 of each gripper finger 115, would be crystallized by the pounding thereagainst of the associated gripper dog 122. To overcome this, I provide on the rod 118 a suitable stop member 128, which serves to limit the rocking movement of the rod at a point to prevent the dog 122 from coming into actual contact with the gripper flange 123 at all times.

The upper roll 47 is also provided with two short creaser blades 129, there being suitable grooves or slots 130 in the lower roll 48 to receive them as such parts come opposite each other in the rotation ofthe rolls. Said creaser blades 129 serve to crease the tube from its folded side edges inward a short distance for the purpose of defining the diamond fold and prevent the tube from buckling or folding upon itself at any other point as the diamond fold is formed and calrlried downward from the top gripper ro The lower roll 48 is also provided with a set of gripper fingers 131, 131 and coacting griper dogs 132, 132 located in suitable slots 133 provided. in the removable section 134 of sa1d lower roll. Such parts are made like and operate in the same manner as the sets of gripper fingers 115 and gripper dogs 122 previously described and clearly shown in Figs. 18 and 22, respectively. These gripper fingers serve to grip the lower layer of the paper tube as it is operated upon by the gripper rolls and serve to spread open the portion of the paper tube in the making of the diamond fold for the bottom of the bag, as shown in Fig. 14. The lower roll 48 is also provi ed with a cutting knife 135, as shown in Fig. 20. Said knife 135 is secured to'the inner end of an operating arm 136 pivoted at 137 to a removable section 138 of the roll 48. The outer end of said arm 136 projects beyond the adjacent end of the roll and is provided at that end with an enlarged portion 139 adapted to be operated upon by a-fixed cam arm 140, as shown in Fig. 15. The rod 136 is moved against the tension of a spring 141. The rod and knife are located in an outwardly opening slot 142, and when the rod is operated by the cam the knife is moved outward through the slot and serves to cut oil the uncut part of the central portion of the lower layer of the tube from the previous bag section having already passed through the rolls 47, 48 inth e forming of the diamond fold for the bottom thereof. Said cutter 135 is moved into and out'of a suit able'slot or groove in a roller 143 provided at the front of the machine and in rolling contact with the lower roll 48. The latter is mounted on a suitable shaft 144 having its ends journaled in brakets 145 secured to the upright standards 43 by fastenin screws 146, as shown in Fig. 1. Said brac ets 145, 145 are yieldingly held against the stand- .a-rds 43, 43 by springs 146 encircling said 48 are two spreading members or arms 147,

147, the latter depending downward from a cross-bar 148 extending across the front of the machine and secured to the upri ht standards 48. Said arms147 are pivote at their upper ends on pivot pins 149, and one has a notch 150, into which extends a lug 151 on the other, so that the movement of one will effect the movement of the other for the purpose of throwing the lower ends of the spreaders a art to aid in breaking the inside folds of t e portion of the tube to be converted into a diamond fold. In Fig. 3 the arms are shown in closed position or inactive, while in Fig. 14 said arms are shown swung into their open position. spreaders 147 are operated automatically and at the proper time forthe purpose stated, and to accomplish this I extend the upper end of one of the spreaders above its pivot 149 and connect such end with an endwise movable rod 152 by a pivot pin 153, as clearly shown in Fig. 5. The outer end of said rod slides through a suitable bracket or hanger 154, between the depending arms of which is a spring 155. Said spring encircles said rod and has one end connected therewith so as to normally throw the rod into a position holding the spreaders closed, as shown in Fig. 3. To push said rod 152 in the opposite direction, I provide a suitable type of mechanism, which comprises a bell crank lever 156 connected by a vertical pivot pin 157 to a cross-bar 158 extending transversely of the machine between the upright standards 43. Said lever 156 has the end 159 thereof extending downward at the inner side of the cross-bar, and is in a position to operate against the adjacent end of the rod 152 when the' bell crank lever is moved for that purpose. Connected with the other end of said lever 156 is an operating rod 160, the latter being connected at its rearward end by a pivot pin 161 with a vertically arranged arm 162, which in turn is pivotally mounted at its lower end on a stud 163 secured to and projecting inward from one of the side members 10 of the machine frame (Fig. 6). Encircling such stud is a sprial spring 164, one end of which is connected withthe stud and the other end connected with the rod 162 so as to hold the rolls 47, 48 is a pair 0 Saidcam 166 is provided at one place on its peat fore stated."

Also located at the front of the machine adjacent the combined ripper and feeding f ironers, preferably comprising two relatively flat plates 168, 168. Each plate 168 is secured to a vertically arranged rockshaft 169 having its lower end ste pod and journaled in a vertical bracket 170 depending from the. crossbar 158. Said shafts 169 have their upper ends extending through; and journaled in said cross-bar, and each is rovided with a rigid arm 171, the latter belng connected at their ends by a link 172, as shown in Figs.2 and 3, so that both of the ironer plates may be operated in unison. One of said roci shafts 169 is also provided at its upper end with a rigid arm 173, to the outer end of which is pivotally connected a rod 174, the latter having its inner end connected. by a pivotpin 175 with an arm 1.76,the latter extending downward immediately beyond the feed rolls 25, 26, as shown in Fig. 6. The

:lower end ofsaid arm is pivoted to a stud the spring will normally tend to maintain. position to hold the ironer; plates closed. Said arm 176 is rockedin; the; opposite. direction and against the tensionof its spring by a cam 179 also "on the shaft.

the arm 176 in a e stud and the -quired to accomplish the function hereto- 24 of the lower feed roll and operating-..

against a roller 180 on said arm, as shown in Fig. 6. By the construction described,-" it naturally follows that the ironer plates 168 will be opened and closed through the intermediary of the revolving cam 179 and when closed will occupy the positions shown in Fig. 3. The ironer plates are opened si multaneously to permit the tube to be fed through the combined feed and gripper rolls 47, 48, and then the s reading arms 1.47 are rapidly moved apart or the pur ose of aidin" in breakin the crease or old at the sides of the tu and are immediately returned to closed position after accomplishing that function. When this has been performed, the ironer plates 168 are immediately moved into closed position and serve to fold the open end of the tube against the gripper rolls 47,48, as shown in Fig- 14.

In preparing the machine for work, the machine is turned over manually for the purpose of feeding the paper tube thereinto, and to permit the operator to gain access to the feed rolls at the front of the machine, I have provided a mechanism whereby the spreader arms 147 and the ironer plates 168 may be manually operated inorder. to be swung bodily outward from the gripper rolls and thus permit this access 'to e had. Such mechanism is constructed as follows. Extending between the side members 10 of the machine frame is a rock shaft 181 (Fig. 6), one end of which extends beyond one of the side members 10 and has secured thereto an operating handle on lever 18? so that the operator'may grasp the same in manually moving the spreaders andironer plates to a position to permit access to be had to the" portion of the feed rolls therebehind. Rigidly secured to said rock shaft 181 is an arm 183, to which is connected a rod 184 by a pivot pin 185; The opposite end of said rod 184 extends to the arm 1.76, which forms part of the mechanism for automatically opening and closing the. i'roner plates, as

shown in Fig. 6.. Said rod 184 is connected to said arm 176 by a pin 186 extending through an elongated slot 187 in said rod 184. Said slot 187 is elongated lengthwise of the rod so as to provide for lost motion between-the part-sand thus permit the arm 17 6 to be rocked back and forth by its cam without in any manner serving to move the rod 184. Such motion is toward and from the forward end of the slot 187 so that when the rod 184 is moved endwise by the hand lever 182, it follows that the arm 176 will be moved for the purpose of opening the ironer plates. Rigidly secured to said rock shaft 181 is an arm 188,,to which is con- I nected a rod 1891by a pivot pm 190. Said,

rod 189 extends upward, as shown in Fig. 6, and has its upper end connected by a pin 191and an elongated slot 192 with a' hand lever 193. Said lever 193 is preferably located adjacent the to of one of the upright standards 43 and on t e same sideof. the machine as the hand lever 182, heretofore referred to, so that both of such parts are.ac-'

cessible from the same side of the machine. ,The cross-bar 148 is providedwith two up-' wardly projecting lugs 195 spaced apart 'endwise of the bar, as shown inFig. 2. Located between said lugs and rockably mounted therein is 'a plate; 196, tothe outeig edge' of which is pivotally connected the spreader arms 147, so that when theiplate is'rocked upward the spreader arms will be swung bodily outward from the gripperrolls 47 ,:48,

independently of the ironer plates 168, asis -"apparent. Said plate 196 has one end projecting beyond'the innermost lug 195 and about which is encircled a spring 197, one

the gripper rolls 47, 48,

.ter figure, the slot 192 is wise of the rod 189 and the with' the tube, I provide anumber 0 wires 198 have their-i1 I vided for that roll 48, as shown in Fig. 6. In the machine illustrated, there are two of such wires.

other. end with the cross-bar 148, so that said springnormally serves to maintain the plate 196 lying flatwlse a ainst said cross-bar and thus hold the spreader arms 147 in their operative position, namely, closely adjacent as shown in the drawings. The opposite. end of said plate 196 extends beyond the outermost lug 195 and has rigidly connected therewith the ad- Jacent end of the hand lever 193, as shown in'Figs. 2 and 6.- As illustrated in the latelongated length, pin 191 normally lies at the upper end of said slot so that when the hand lever 19.3 is grasped and moved downward the plate 196 will be rocked upward for the purposes stated, independent of any movement being imparted to the rod 189 and consequently independent ofgany movement being imparted to the ironer plates. fBut when .the rod 189 is moved downward byactuating the hand lever 182, it follows that the plate 196 and its attached spreader arms 147 will be swung bodily outward away from the gripper rolls simultaneously with the the ironer plates to open the same.

- After the diamond fold'has been completed and after the tube has been completely severed by the cutter 135 in the rol1 48 the gripper fingers in the gripper rolls areactuated on the paper tube so as to release their hold andf'thereupon ermit the machine to'fe'e'd the paper tube ownward between the lower gripper roll 48 and the roll 143. From such setof rollsthe tubewith its diamond fold is fed to aset' of rolls therebelow, one of such movement given to 1 rolls constituting a paste roll and provided a with parts for applying paste to the margi-.

nal edges of the folded portionsof the -d1a-' mond fold so that such portions whenultimately folded will be sealed together to complete the bottom of the bag being formed when fed forward to'the folding rolls utilized for that purposefand not shown in the drawings as being'old in the art.v To'prevent the paper tube from adheringto and being carried around with the lower gripper roll 48 after the gripper fingers therein have released themselves from enga ement' uide members 198, which may take the fogn of wires or other metal strips. Said guide partially into the annu ar grooves 199 pmpurpose in the lower gripper Said wires .198 are anchored in across-bar. 200 extending across the front of-the maper ends extending chine and suitably secured to the rigid frame.

thereof. For" the purpose -of gu1ding the folded portion of the bag forming the dia- I located therebelow, I provide a number '0 -'g11ide members 202 preferably in the form of Wires or other metallic strips, as found 7 most desirable; Saidwires 202, as shown in Fig. 6', have theirfouter ends secured or anchoredto a cross-bar 203, which is 10- 202 and 198, as shown inFig. 6, so as to.

- lie. As shown in Fig. 3, the

- be fed beyond The roll cated in frontof the roll 143, and is suitably i secured to the brackets or boxes 145, in

which the shaft of the roll 143 is journaled, Said wires 202 extend inward over the top paste roll, as shown in Fig. 6, there being a suitable space provided between said wlres provide a channel for thefreceptionof the paper tube as it is fed toward the paste roll.- 3

143 is provided wlth suitable angearing. 11 ustrate 1t followsthat power is nular grooves 204, in whichthe wires 202 is provided with paste applylng ribs 205.

vLocated to the rear of saidpaste roll 201 and having rolling 'contact therewith are two idler rolls 206, 207, one bemg located above the other, as shown in Figs. 6 and 14,

and 'serving to 'hold the interposed paper tube against the paste roll and permit it to the same for the purpose of having the diamond fold operated upon further inthe folding of the dlamond fold to complete the bottom of the bag. The wires 198 extend downward between the paste roll 201 andthe uppermost idler roll 206 and also between the paste roll and the lowermost idler roll 207,said idler rolls being provided with annular grooves 208, 209 for that purpose. Located below the paste roll is ,a'

feed roll 210, and between said rolls the wires 198 extend, as shown in Figs. 3 and 6. The portionof each mm 198 to the rear of the paste roll 201 and between the idler rolls 206,207 is looped-rearward andheld in position by suitable wires or members 211,

latter bemg anchored ,1n'a cross-bar 212. g V

1 which the idler rolls 206, 207 are mounted, are'yieldably supported in suitable brackets the To further aid in guiding the paper tube as it passes between and from the paste r011 201 and the lowermost feed roll 210, I also. ro-

gchored to the cross-bar 212 and passing tween the paste roll and the feed roll t f ra'lity 55 'The bottom ofthe. guide channel for the 1 of sand wires, as'shQwnin Figs. 3 and 6.

paper tube as it is fed from the paste roll 201 onward to'the folding rolls (not shown) is formed bythe wires 198 and 213. The top of said channel is formed by guide wires "214, 21 4 anchored in a cross-bar 214 extending across the front of the machine in front of the paste and feed rolls 201, 210,

. respectively; There are two of such wires 214, one above each wire 213, as shown in of said roll 143 and downward toward the showninF-i paste roll 201 The shaft 144 Fig.3, and the inner end of each wire 214 extends into an annular groove 214 provided in the aste roll 201 so as to prevent ,adhered theretobyithe'paste applied to the tube. v 1

j The feed roll 210' is mounted on the shaft 71 and the latter has its ends journaled in suitable bearing-boxes215 retained in vertical slots 216.. in upright standards 217, as 1 and 4. I At the left-hand side of the machine the shaft 71 is provided with a gear wheel 218,. as shown in Fig. 4, meshingfwit'h a gear wheel 219, the latter meshing with a gear wheel 220, which in turn meshes with the large intermediate gear 31, as shown in said Fi 4; B the arrangement of the =71 is also provided with agear wheel 221,

which meshes with a gear wheel 222 on the shaft 223, upon which the paste roll 201 is paste roll is rotated from the shaft 71 by the gear just referred in v is provided at the left-hand side of the machine with a gear wheel 224,

flwhich meshes-with the gear wheel 55, as shown in Fig. 4, so that power may be trans- -mitted to said shaft from the main driven 1 shaft 33. As shown in Fig. 1, the shaft 223,

upon which the paste roll is mounted, has its endsjournaled in suitable bearing boxes mounted. From this it follows that. the 1 22,5 suitably mounted in'the upright stand- .ard 217; Said roll 201is yieldably held in position by springs 226, the tension of which may be adjusted; by setscrews 227 inthe usual manner. Theboxes 215and'225 may be' separated'by an interposed separating member 228.

-' The ends of the shafts'231' and 231*,"upoh or boxes 229, 230, asfshown' in Fig. '10. The

shaft 231 of the upper idlerroll206 is jourposed rigid part of the bracket, so that the idler roll may be "held lyieldingly against the paste roll 201. 'ThersamdCOllStIllQQlOn is provided "for the lower idler roll 207, "and like parts have beentindicatedby like refer .ence numerals.

The shafts 231 and231are each provided 1 with a gear wheel. 231? and 231, respectively, and which gear wheels mesh, with the;

gear wheel 222 as shown, in, Fig.;5.

In order to make room for theipaste pan or dish (not shown) at a5 point infrontof the paste roll 201, I secure thestanda'rds 217- of the paste roll to an inclined step 'orsurface 234 on the side member of the machine.

frame at the front thereof, as shownin Fig.1,

y providing the cutter knives 41, 41 m the-feed rolls 25, 26 instead 'of placing them in the gripper rolls 47, 48,- I am enabled to provide the proper amount of space on the gripper rolls for the ide wires 198, 198 to be associated therewith, for if said knives were in the gripperrolls it would naturally follow that they would occupy that space into which the guide wires 198 now extend. By providing the set of cutting knives 88 and 135 in the two gripper rolls 47, 48, I am enabled to accomplish the resultsto be performed by said chine, instead of being required to employ such set of knives in another set of rolls or 7 other parts that would be mdependent of the gripper rolls. It naturally. follows that 'there' is not only a saving in material used in constructing the complete machine, but also a reduction in labor cost, as well as floor space required to befoccupied by, the machine. These are all essential advantages in constructing and operating machines of this character. It will be noted that the paste roll 201 is located directly below thegripper rolls andtherefore in a position not only to effectively accomplish the purpose for which it is designed, but 'is located in a position that ai s in shortening the ultimate length of the machine.

- Briefly, the machine described and shown "herein operates in the following manner.

The paper stock from which the bag is'made is fed from a .roll. of. such stock mounted beyond the rear end of the machine. The

' [paper sheet is initially of a width equal to the width of the bag when completely opened I and spread out flat, and, on being drawn from. the roll of paper, is operated upon by suitable folding devices for folding the i paper sheet in the form of a tube and providingthe bellows fold in the side thereof, and also hasthe longitudinal meeting edges of the folded tube sealed together by an adhesive applied to the tube' as it is ad-' vanced to the machine. Before the paper tube reaches the feed rolls 25, 26, the upper layer thereof is cut to form the longitudinal orside cuts 39, 3 9 and; the lip 38.- Such parts, of the complete machine are'not shown in the? drawings because they are old and well 'kliqwn in the art, but of course will be used in connection with the machine hereindescribed and shownin order to complete the tube before being operated upon by the mechanism which I have heretofor described and as constituting the subject 'matter of.my present invention. After the tube has been formed and operated upon ives in the he upper gripper rolls themselves and thereb aid in shortening the length of the comp ete maagainst the as they are 'well known in 'ofcourse be utilized with 41 41' cut the transverse slots 40, 40 in the be to the-extent-shown in Fig. 14. .The tube is then guided by the guide strips 57, 57 to the gmpper rolls 47, 4 8, and just prior to bem engaged by said gripper rolls the sides o spreadmg devices heretofore desin'ibed, and also fed to the rolls by the reciprocating Spreaders 67. Both layers of the tube are then severed from the base ofthelip 38 outthe tube are'spread apart by the s a feature? feed rolls 25,' 6lwhereupontheknife blades ward throughthe'bellows' fold at the sides gripper rolls 47, 48, wheregripper fingers j by the g mouth the tube 1s then opened and projects for-- ward from the upon the spreaderarms 147, 147 are actuated to break the folds 'at the sides of the tube, whereupon the ironer' plates 168, 168' are closed'and serve toiflatten out the out wardly pro ec t1 ng portions of; the tube gripper rolls, as shown inYIFigQl 14. The reciprocating knife 135" in the lower grlpper roll 48 is actuated at the the tube from. the portion of the tube preico proper time to sever the now folded end of ceding it, and thereupon the severalsetsjof gagement, with the folded end of-,.the tube gripper fingers are released from j'their-enaj at the pp ,rollstopermit the tube in}; j"

be fed downward diamond fold into the completely form the hese parts are not shown the art and will complete machine heretofore described.

Among the advantages of my novelconstruction are the following: The parts are so constructed that they are durable, and are so arranged that the machine is compact and thereby shortens up the length of the machine and permits it to occupy a smaller the part of the past and beyond the pastef roll 201. From such roll the folded-tubeis acted upon by suitable folding roll'slsituatedf 7 beyond the forward end ofthe machine parts shown, in order to. fold the thus'jmjadef position required to bottom ofv the bags in the drawings amount of floor space than required for machines of the type heretofore constructed.

Furthermore, my machine is-a high speed one, and permits the making and turning out of complete bagsm great numbers and in a short period of time. The guide strips 57 serve to properly guide the tube through the 

